> a) do you need an SLOG at all? Some workloads (asynchronous ones) will > never benefit from an SLOG.
We're planning to use this box for CIFS/NFS, so we'll need an SLOG to speed things up. > b) form factor. at least one manufacturer uses a PCIe card which is > not compliant with the PCIe form-factor and will not fit in many cases > -- especially typical 1U boxes. The box is 4U with some 7 8x PCIe slots, so I think it should do fine > c) driver support. That was why I asked here in the first place... > d) do they really just go straight to ram/flash, or do they have an > on-device SAS or SATA bus? Some PCIe devices just stick a small flash > device on a SAS or SATA controller. I suspect that those devices won't > see a lot of benefit relative to an external drive (although they > could theoretically drive that private SAS/SATA bus at much higher rates > than an external bus -- but I've not checked into it.) > > The other thing with PCIe based devices is that they consume an IO > slot, > which may be precious to you depending on your system board and other > I/O needs. As I mentioned above, we have sufficient slots. As for the SATA/SAS onboard controller, that was the reason I asked here in the first place. So - do anyone know a good device for this? X25-E is rather old now, so there should be better ones available...... Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt. Det er et elementært imperativ for alle pedagoger å unngå eksessiv anvendelse av idiomer med fremmed opprinnelse. I de fleste tilfeller eksisterer adekvate og relevante synonymer på norsk. _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
